IGCSE Biology Paper-1: Specimen Questions with Answers 178 - 179 of 208

Question 178

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Question

MCQ▾

A heterozygous tall pea plant, Tt is self-fertilized.

What are the offspring seen because of the cross?

Choices

Choice (4)
a.all tall plants
b.one dwarf plant and three tall plant
c.one tall plant and three dwarf plant
d.all dwarf plants

Answer

b.

Explanation

A heterozygous tall pea plant, Tt is self-fertilized.

A heterozygous tall pea plant, Tt is self-fertilizedA heterozygous tall pea plant, Tt is self-fertilized
Tt
TTT TallTt Tall
tTt Talltt Dwarf

When a tall pea plant having genotype, Tt is self-fertilized it will produce three tall and one dwarf.

Question 179

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Question

MCQ▾

The diagram shows the human heart.

Blood of the Lungs

Blood of the Lungs

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Which of the following option is Correct?

Which of the following option is Correct? Which of the following option is Correct?
PQRS
ARight atriumLeft atriumRight ventricleLeft ventricle
BLeft atriumRight atriumLeft ventricleRight ventricle
CLeft atriumRight atriumLeft ventricleRight ventricle
DLeft ventricleRight ventricleLeft atriumRight atrium

Choices

Choice (4)
a.B
b.D
c.A
d.C

Answer

c.

Explanation

The heart has four chambers: two atria and two ventricles. The right atrium receives oxygen-poor blood from the body and pumps it to the right ventricle. The right ventricle pumps the oxygen-poor blood to the lungs. The left atrium receives oxygen-rich blood from the lungs and pumps it to the left ventricle

Blood of the Lungs

Blood of the Lungs

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